Ball-bearing for spring-hinges.



Wr/Tirrena' 'PM EMIL BOMMER, oE NEW YORK, Nmih;V

BALL-BEARING FOR SPRING-HINGES.

j No. 822,570.

Specification of Letters Patent.

Patented .Tune 5, 1906.

application sied January 14. 1905. 'serial No. 241.140

To all whom, it m/ay concern: v

Be it known that I, EMIL BOMMER, a citizen of the United States, residing in New York, borough of Brooklyn, in the State of New York, have invented certain new and useful Improvements in Ball-Bearings for Spring- Hinges, of which the following is a specification.

This invention relates to improvements in ball-bearings, and more especially ball-bearings for single and double acting springhinges, in which ball-bearings are used for permitting the easy working of the hinge, said ball-bearings being used with the springhinge for which Letters Patent were granted to me on December 22, 1903, No. 747,680.

The invention has among its objects to provide a ball-bearing in which the ball-races are held together very securely, although the thickness of the bearing is not increased, and in which the amount of metal used for the covering is reduced to a minimum.

\ With these ends in view the invention consists in the novel features and combinations of parts to be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of a double-acting spring-hinge provided witn my improved ball-bearings and showing two of said ballbearings in central section. Figs. 2 and 3 are respectively a vertical central section and a lan view o1 my improved ball-bearing, awn on a larger scale, the ball-bearing being adapted for use with the upper pintlesocket; and Figs. 4 and 5 are respectively a i vertical central section and a top view of the 1 improved ball-bearing shown as adapted for` use witn the lower intle-socket of the hinge.

Similar letters ofD reference indicate corresponding parts.

Referring to the drawings, a denotes the spring-barrel of a single or double acting Spring-hinge, which is provided with the usual pintles b. Between the tension-collar f, `by which the tension of the spring in the springbarrel is adjusted to the desired degree, and

. the rims or ledges of the hinge leaves or anges are interposed the pintle-sockets d,

which are of conical shape, as shown, and which receive the end portions of the pintles b. Between the tension-collarf of the upper adjustable spring-holder e, which tensioncollar is provided witn the usual radial holes for inserting the pin-lever in adjusting the tension of the spring in the spring-barrelhand the adjacent edge ol the barrel and between the lower edge of the barrel and the adjacent face of the lower pintle-socket are interposed ball-bearings g g, which consist each of two circular ball race-plates g2 g3, which are shown in detail in Figs. 2 and 4. The ball race-plates are provided in their adjacent faces with circular grooves, between which the antifriction-balls are interposed when the race-plates are placed in position. The race-plates g2 g3 and the balls between the same are held in position by means of a cylindrical covering or shell h, which is made of` suitable metal- -such as bronze, brass, or the likeand the edges of which are la ed over so as to form flanges, which eXten Into circumferential recesses of the race-plates. The flange at one end of the sheet-metal covering h is set into a circumferential recess of one racelate, which recess is approximately equal in epth with the thickness of the sheet-metal covering, 'so that the fiange is Hush, or ap roximately so, with-one of the race-plates, w 'le the circumferential recess of the other race-plate is at a greater distance from the face, so that the race-plate can rest on the edge of the spring-barrel, while the body of the same projects into the spring-barrel, as shown clearly in Fig. 1.

After the race-plates and balls between the same are properly assembled, the covering 71., which is flanged at one end, is laced over the same, after which the other e ge is bent over b means of suitable dies,'so that the flanges of7 the covering hold the race-plates and the antifriction-balls in position and prevent their getting detached from each other. The ball-bearings are thereby ready for use, so that they can be quickly and conveniently assembled when putting together the parts of the hinge. The sheet-metalcoverin h of the ball-bearings is preferabl provide with a suitable hole o at a suitab e oint, which registers with the clearance etween the ball race-plates, so as to serve as an oil-hole for oiling thel hall-bearings from time to time.

IOO

The race-plates of the ball-bearings are preferably made of steel, while the covering of sheet metal corresponds to the metal of which the lflanges of the spring-hinge are made, the sheet-metal covering acting at the same time as a cap for excluding dust and rain from the ball-bearings. The application of the sheet-metal covering is so arranged that the contact of the faces of the race-plates with the adjacent tension-collar and with the IIO lower pintle-socket, respectively, is made hard-metal contact, 'thereby preventing cornpression and co'nsequent play between the joints, the anges of the cover not being subjected to wearing contact.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A ball-bearing for spring-hinges, comprising two race-plates provided with circumferential grooves in their adjacent faces, antifriction-balls in said grooves, each of said race-plates being provided with a circumferential recess near its outer face, and a ianged sheet-metal covering engaging said recesses Jfor holding together said race-plates and balls.

2. A ballebearing for spring-hinges, corn- 

